import { VantComponent } from '../common/component';
import { getRect, requestAnimationFrame } from '../common/utils';
VantComponent({
  props: {
    text: {
      type: String,
      value: '',
      observer: 'init'
    },
    mode: {
      type: String,
      value: ''
    },
    url: {
      type: String,
      value: ''
    },
    openType: {
      type: String,
      value: 'navigate'
    },
    delay: {
      type: Number,
      value: 1
    },
    speed: {
      type: Number,
      value: 60,
      observer: 'init'
    },
    scrollable: null,
    leftIcon: {
      type: String,
      value: ''
    },
    color: String,
    backgroundColor: String,
    background: String,
    wrapable: Boolean
  },
  data: {
    show: true
  },
  created() {
    this.resetAnimation = wx.createAnimation({
      duration: 0,
      timingFunction: 'linear'
    });
  },
  destroyed() {
    this.timer && clearTimeout(this.timer);
  },
  mounted() {
    this.init();
  },
  methods: {
    init() {
      requestAnimationFrame(() => {
        Promise.all([getRect(this, '.van-notice-bar__content'), getRect(this, '.van-notice-bar__wrap')]).then(
          (rects) => {
            const [contentRect, wrapRect] = rects;
            const { speed, scrollable, delay } = this.data;
            if (
              contentRect == null ||
              wrapRect == null ||
              !contentRect.width ||
              !wrapRect.width ||
              scrollable === false
            ) {
              return;
            }
            if (scrollable || wrapRect.width < contentRect.width) {
              const duration = ((wrapRect.width + contentRect.width) / speed) * 1000;
              this.wrapWidth = wrapRect.width;
              this.contentWidth = contentRect.width;
              this.duration = duration;
              this.animation = wx.createAnimation({
                duration,
                timingFunction: 'linear',
                delay
              });
              this.scroll(true);
            }
          }
        );
      });
    },
    scroll(isInit = false) {
      this.timer && clearTimeout(this.timer);
      this.timer = null;
      this.setData({
        animationData: this.resetAnimation
          .translateX(isInit ? 0 : this.wrapWidth)
          .step()
          .export()
      });
      requestAnimationFrame(() => {
        this.setData({
          animationData: this.animation.translateX(-this.contentWidth).step().export()
        });
      });
      this.timer = setTimeout(() => {
        this.scroll();
      }, this.duration);
    },
    onClickIcon(event) {
      if (this.data.mode === 'closeable') {
        this.timer && clearTimeout(this.timer);
        this.timer = null;
        this.setData({ show: false });
        this.$emit('close', event.detail);
      }
    },
    onClick(event) {
      this.$emit('click', event);
    }
  }
});
